National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2009-1895 Detail

Current Description

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html Patch Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6 Vendor Advisory
http://patchwork.kernel.org/patch/32598/ Patch Vendor Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0111 Third Party Advisory
http://www.debian.org/security/2009/dsa-1844 Third Party Advisory
http://www.debian.org/security/2009/dsa-1845 Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc3 Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051 Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2009-1193.html Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2009-1438.html Third Party Advisory
http://www.securityfocus.com/archive/1/505254/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/512019/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/35647 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/usn-807-1 Third Party Advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.html Third Party Advisory
http://www.vupen.com/english/advisories/2009/1866 Patch Third Party Advisory
http://www.vupen.com/english/advisories/2009/3316 Third Party Advisory
https://bugs.launchpad.net/bugs/cve/2009-1895 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453 Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1540.html Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2009-1550.html Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.html Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html Third Party Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.6.31
 cpe:2.3:o:linux:linux_kernel:2.6.31:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:linux:linux_kernel:2.6.31:rc2:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2009-1895
NVD Published Date:
07/16/2009
NVD Last Modified:
11/08/2018